| Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. |
| DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| |
| This code is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License version 2 only, as |
| published by the Free Software Foundation. |
| |
| This code is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| version 2 for more details (a copy is included in the LICENSE file that |
| accompanied this code). |
| |
| You should have received a copy of the GNU General Public License version |
| 2 along with this work; if not, write to the Free Software Foundation, |
| Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| or visit www.oracle.com if you need additional information or have any |
| questions. |
| |
| All gc/lock/ tests do approximately the same thing. They verify that GC |
| is appropriately synchronized with certain class of functions. |
| |
| - gc/lock/jni - uses JNI GetPrimitiveArrayCritical and GetStringCritical |
| - gc/lock/jniref - uses JNI NewGlobalRef, NewLocalRef, NewWeakGlobalRef |
| - gc/lock/malloc - uses malloc() |
| - gc/lock/jvmti - uses JVMTI Allocate |
| |
| A number of threads is started. There are some threads that repeatedly |
| enter a critical section of code where functions describe above are |
| repeatedly called in a loop. There are also some threads that eat |
| memory in a loop. The idea here is to force GC to crash or deadlock. |
